1 // This file is part of OpenCV project.
2 // It is subject to the license terms in the LICENSE file found in the top-level directory
3 // of this distribution and at http://opencv.org/license.html.
4
5 #include "test_precomp.hpp"
6 #include "opencv2/stitching/warpers.hpp"
7
8 namespace opencv_test { namespace {
9 class ReprojectionTest : public ::testing::Test {
10
11 protected:
12 const size_t TEST_COUNT = 15;
13 Mat K, R;
14 RNG rng = RNG(0);
ReprojectionTest()15 ReprojectionTest()
16 {
17 K = Mat::eye(3, 3, CV_32FC1);
18 float angle = (float)(30.0 * CV_PI / 180.0);
19 float rotationMatrix[9] = {
20 (float)cos(angle), (float)sin(angle), 0,
21 (float)-sin(angle), (float)cos(angle), 0,
22 0, 0, 1
23 };
24 Mat(3, 3, CV_32FC1, rotationMatrix).copyTo(R);
25 }
TestReprojection(Ptr<detail::RotationWarper> warper,Point2f pt)26 void TestReprojection(Ptr<detail::RotationWarper> warper, Point2f pt) {
27 Point2f projected_pt = warper->warpPoint(pt, K, R);
28 Point2f reprojected_pt = warper->warpPointBackward(projected_pt, K, R);
29 EXPECT_NEAR(pt.x, reprojected_pt.x, float( 1e-5));
30 EXPECT_NEAR(pt.y, reprojected_pt.y, float( 1e-5));
31 }
32 };
33
34
TEST_F(ReprojectionTest,PlaneWarper)35 TEST_F(ReprojectionTest, PlaneWarper)
36 {
37 Ptr<WarperCreator> creator = makePtr<PlaneWarper>();
38 for (size_t i = 0; i < TEST_COUNT; ++i) {
39 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
40 }
41 }
42
TEST_F(ReprojectionTest,AffineWarper)43 TEST_F(ReprojectionTest, AffineWarper)
44 {
45 Ptr<WarperCreator> creator = makePtr<AffineWarper>();
46 for (size_t i = 0; i < TEST_COUNT; ++i) {
47 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
48 }
49 }
50
TEST_F(ReprojectionTest,CylindricalWarper)51 TEST_F(ReprojectionTest, CylindricalWarper)
52 {
53 Ptr<WarperCreator> creator = makePtr<CylindricalWarper>();
54 for (size_t i = 0; i < TEST_COUNT; ++i) {
55 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
56 }
57 }
58
TEST_F(ReprojectionTest,SphericalWarper)59 TEST_F(ReprojectionTest, SphericalWarper)
60 {
61 Ptr<WarperCreator> creator = makePtr<SphericalWarper>();
62 for (size_t i = 0; i < TEST_COUNT; ++i) {
63 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
64 }
65 }
66
TEST_F(ReprojectionTest,FisheyeWarper)67 TEST_F(ReprojectionTest, FisheyeWarper)
68 {
69 Ptr<WarperCreator> creator = makePtr<FisheyeWarper>();
70 for (size_t i = 0; i < TEST_COUNT; ++i) {
71 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
72 }
73 }
74
TEST_F(ReprojectionTest,StereographicWarper)75 TEST_F(ReprojectionTest, StereographicWarper)
76 {
77 Ptr<WarperCreator> creator = makePtr<StereographicWarper>();
78 for (size_t i = 0; i < TEST_COUNT; ++i) {
79 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
80 }
81 }
82
TEST_F(ReprojectionTest,CompressedRectilinearWarper)83 TEST_F(ReprojectionTest, CompressedRectilinearWarper)
84 {
85 Ptr<WarperCreator> creator = makePtr<CompressedRectilinearWarper>(1.5f, 1.0f);
86 for (size_t i = 0; i < TEST_COUNT; ++i) {
87 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
88 }
89 }
90
TEST_F(ReprojectionTest,CompressedRectilinearPortraitWarper)91 TEST_F(ReprojectionTest, CompressedRectilinearPortraitWarper)
92 {
93 Ptr<WarperCreator> creator = makePtr<CompressedRectilinearPortraitWarper>(1.5f, 1.0f);
94 for (size_t i = 0; i < TEST_COUNT; ++i) {
95 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
96 }
97 }
98
TEST_F(ReprojectionTest,PaniniWarper)99 TEST_F(ReprojectionTest, PaniniWarper)
100 {
101 Ptr<WarperCreator> creator = makePtr<PaniniWarper>(1.5f, 1.0f);
102 for (size_t i = 0; i < TEST_COUNT; ++i) {
103 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
104 }
105 }
106
TEST_F(ReprojectionTest,PaniniPortraitWarper)107 TEST_F(ReprojectionTest, PaniniPortraitWarper)
108 {
109 Ptr<WarperCreator> creator = makePtr<PaniniPortraitWarper>(1.5f, 1.0f);
110 for (size_t i = 0; i < TEST_COUNT; ++i) {
111 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
112 }
113 }
114
TEST_F(ReprojectionTest,MercatorWarper)115 TEST_F(ReprojectionTest, MercatorWarper)
116 {
117 Ptr<WarperCreator> creator = makePtr<MercatorWarper>();
118 for (size_t i = 0; i < TEST_COUNT; ++i) {
119 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
120 }
121 }
122
TEST_F(ReprojectionTest,TransverseMercatorWarper)123 TEST_F(ReprojectionTest, TransverseMercatorWarper)
124 {
125 Ptr<WarperCreator> creator = makePtr<TransverseMercatorWarper>();
126 for (size_t i = 0; i < TEST_COUNT; ++i) {
127 TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
128 }
129 }
130
131 }} // namespace
132